Thermochromic multilayer films of VO2 and TiO2 with enhanced transmittance

被引：241
|
作者：
Mlyuka, N. R. [1 ,2 ]
Niklasson, G. A. [1 ]
Granqvist, C. G. [1 ]
机构：
[1] Uppsala Univ, Angstrom Lab, Dept Engn Sci, SE-75121 Uppsala, Sweden
[2] Univ Dar Es Salaam, Dept Phys, Dar Es Salaam, Tanzania
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2009年 / 93卷 / 09期
关键词：
Thin film; Thermochromism; Vanadium dioxide; Energy efficiency; OPTICAL-PROPERTIES; OXIDE;
D O I：
10.1016/j.solmat.2009.03.021
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Thermochromic films Of VO2, as well as multilayer films Of VO2 and TiO2, were made by reactive DC magnetron sputtering. Spectrophotometrically measured transmittance and reflectance were used to determine optical constants pertinent to temperatures below and above a temperature-induced structural change at tau(c)approximate to 60 degrees C. We then used computations to optimize multilayer films for specific applications and, specifically, demonstrated that TiO2/VO2/TiO2 films Could display a luminous transmittance significantly higher than that of bare VO2 films, and that TiO2/VO2/TiO2/VO2/TiO2 films could yield a large change of solar transmittance for temperatures above and below tau(c). Our data can serve as starting points for developing novel coatings for windows With Superior energy efficiency. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1685 / 1687
页数：3
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